Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Number and Cost of Common Stock Shares Repurchased

The number and the cost of common stock shares repurchased during the six months ended June 30, 2018 and 2017, are reflected in the following table (in thousands):

	Six Months Ended   June 30,
	2018		2017
Common stock repurchased (in shares)	2,194		2,137
Common stock repurchased	$	135,989	$	101,068

Number and Cost of Employee Stock Plan Repurchases

The number and the cost of repurchases related to employee stock plans made during the six months ended June 30, 2018 and 2017, are reflected in the following table (in thousands):

	Six Months Ended   June 30,
	2018		2017
Repurchases related to employee stock plans (in shares)	147		305
Repurchases related to employee stock plans	$	8,496	$	14,742